CN110600811A

CN110600811A - Integrative equipment of pin type lithium cell film-making coiling

Info

Publication number: CN110600811A
Application number: CN201910840268.9A
Authority: CN
Inventors: 曹海霞; 杨琪; 杨达奇; 梁振辉
Original assignee: Zhuhai Higrand Technology Co Ltd
Current assignee: Zhuhai Higrand Technology Co Ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2019-12-20

Abstract

The invention discloses needle type lithium battery sheet-making and winding integrated equipment which comprises a pole piece conveying module, a diaphragm conveying module and a winding module, wherein the pole piece conveying module is connected with the diaphragm conveying module; the positive plate feeding module and the negative plate feeding module respectively comprise a pole piece unreeling mechanism, a first pole piece tension mechanism, a pole lug welding mechanism, a protective tape sticking mechanism, a second pole piece tension mechanism, a pole piece length measuring mechanism and a pole piece deviation rectifying and feeding mechanism; the diaphragm feeding module comprises a diaphragm unreeling mechanism, a diaphragm tension mechanism and a diaphragm pull-down mechanism; the winding module comprises a winding head mechanism, a pole piece cutter mechanism, a glue termination mechanism, a diaphragm cutting and ending mechanism and a blanking mechanism; the diaphragm pull-down mechanism pulls the diaphragm down to penetrate through the winding head mechanism, and the positive pole piece and the negative pole piece are respectively inserted into the winding head mechanism and located on two sides of the diaphragm. A plurality of functional modules in the equipment are integrated to automatically complete the winding preparation of the battery cell, so that the preparation efficiency of the battery cell is greatly improved.

Description

Integrative equipment of pin type lithium cell film-making coiling

Technical Field

The invention relates to the technical field of lithium battery preparation, in particular to needle type lithium battery sheet-making and winding integrated equipment.

Background

Lithium ion batteries have been widely used with their unique performance advantages, such as notebook computers, video cameras, mobile communication, electric vehicles, and the like. Meanwhile, a high-capacity lithium ion battery is also tried in the electric automobile, is expected to become one of main power sources of the electric automobile in the 21 st century, and is expected to be applied to the aspects of artificial satellites, aerospace and energy storage.

In the face of huge demand of the market, the technology of the lithium battery industry needs to be continuously improved, and equipment for manufacturing the lithium battery needs to have the characteristics of stable performance, improved efficiency and integration of multiple functions. The enterprises having such a device for manufacturing a lithium battery have market competitiveness.

Aiming at the preparation of needle type lithium batteries, no needle type battery cell full-automatic winding equipment is available at home at present. The needle type lithium battery is small in size and thin in winding needle, and the winding needle is easy to generate reaction force in the winding process, so that the winding needle is broken; because the battery is less, the alignment accuracy control of the antipode diaphragm needs to be more accurate. At present, no mature needle type lithium battery sheet-making and winding integrated equipment exists in the market.

Disclosure of Invention

The invention aims to provide needle type lithium battery sheet-making and winding integrated equipment which can realize integrated sheet-making and winding of needle type lithium batteries.

The technical scheme adopted for solving the technical problems is as follows: a needle type lithium battery sheet-making and winding integrated device comprises a pole piece conveying module, a diaphragm conveying module and a winding module;

the positive plate feeding module and the negative plate feeding module respectively comprise a pole piece unreeling mechanism, a first pole piece tension mechanism, a pole lug welding mechanism, a protective tape pasting mechanism, a second pole piece tension mechanism, a pole piece length measuring mechanism and a pole piece deviation rectifying and feeding mechanism;

the membrane feeding module comprises a membrane unreeling mechanism, a membrane tension mechanism and a membrane pull-down mechanism;

the winding module comprises a winding head mechanism, a pole piece cutter mechanism, a glue termination mechanism, a diaphragm cutting and ending mechanism and a blanking mechanism;

the diaphragm unwinding mechanism is located above the winding head mechanism, the diaphragm pulling-down mechanism is located below the winding head mechanism, the diaphragm pulling-down mechanism pulls down the diaphragm to pass through the winding head mechanism, a positive plate output by the pole piece deviation-rectifying piece-feeding mechanism of the positive plate piece-feeding module is inserted into one side of the winding head mechanism, a negative plate output by the pole piece deviation-rectifying piece-feeding mechanism of the negative plate piece-feeding module is inserted into the other side of the winding head mechanism, and the positive plate and the negative plate are respectively located on two sides of the diaphragm for winding.

As an improvement of the scheme, a pole piece dust removal mechanism is further installed between the first pole piece tension mechanism and the pole lug welding mechanism.

As an improvement of the scheme, a CCD pole piece detection mechanism is further installed between the protective tape pasting mechanism and the second pole piece tension mechanism.

As an improvement of the scheme, the battery cell feeding mechanism is further included and is installed below the blanking mechanism.

As an improvement of the scheme, the dust collection device further comprises an equipment sealing dust removal system, wherein the equipment sealing dust removal system is installed around the equipment in a sealing mode, and the equipment sealing dust removal system comprises a fan arranged at the top of the equipment and a dust collection device arranged at the bottom of the equipment.

As an improvement of the scheme, the device further comprises a complete machine control system, wherein the complete machine control system comprises a control host, and the control host is arranged outside the sealed dust removal system of the equipment.

As an improvement of the scheme, the pole piece deviation rectifying and feeding mechanism comprises a clamping piece mechanism, a deviation rectifying driving mechanism, a pole piece feeding driving mechanism and a deviation rectifying detector, wherein the clamping piece mechanism is used for clamping or loosening a pole piece passing through the clamping piece mechanism, the driving end of the deviation rectifying driving mechanism is linked with the clamping piece mechanism, the deviation rectifying driving mechanism drives the clamping piece mechanism to reciprocate in the deviation rectifying direction, the driving end of the pole piece feeding driving mechanism is linked with the clamping piece mechanism, the pole piece feeding driving mechanism drives the clamping piece mechanism to reciprocate in the pole piece conveying direction, and the deviation rectifying detector is used for detecting the deviation of the pole piece.

As an improvement of the above scheme, the clamping piece mechanism comprises an upper clamping piece, a lower clamping piece and a clamping piece driving mechanism, wherein the clamping piece driving mechanism drives the upper clamping piece to move in the vertical direction of the upper surface and the lower surface of the pole piece, so that the two clamping pieces move oppositely or back to back; a first pressing wheel is rotatably arranged on the upper clamping piece, a second pressing wheel is rotatably arranged on the lower clamping piece, and the first pressing wheel and the second pressing wheel are arranged in a vertically opposite mode; the second pinch roller rotates in a single direction, and the rotating direction of the second pinch roller is consistent with the conveying direction of the pole piece.

As an improvement of the above scheme, the first pinch roller and the second pinch roller are respectively arranged at the front end parts of the upper clamping piece and the lower clamping piece; the detection position of the deviation rectifying detector is arranged close to the first pinch roller and the second pinch roller and behind the first pinch roller and the second pinch roller.

As an improvement of the above scheme, the deviation-correcting driving mechanism includes a first motor, a belt transmission mechanism and a first lead screw assembly, the first lead screw assembly includes a first lead screw and a first bearing seat sleeved on the first lead screw, the first motor drives the first lead screw to rotate forward and backward, the first bearing seat reciprocates along the deviation-correcting direction, and the clip mechanism is fixedly connected with the first bearing seat through a first rigid connecting piece to realize synchronous movement; the sheet feeding driving mechanism is mounted on the rack and comprises a second motor and a second lead screw assembly, the second lead screw assembly comprises a second lead screw and a second bearing seat sleeved on the second lead screw, the second motor drives the second lead screw to rotate positively and negatively, the second bearing seat reciprocates along the pole piece conveying direction, and the deviation rectifying driving mechanism is fixedly connected with the second bearing seat through a second rigid connecting piece so as to realize synchronous movement.

As an improvement of the above scheme, the winding head mechanism includes a first reel shaft sleeve, a second reel shaft sleeve, a first needle shaft and a second needle shaft, the first reel shaft sleeve and the second reel shaft sleeve are connected with a driving module, the first reel shaft sleeve and the second reel shaft sleeve rotate synchronously, the first needle shaft and the first reel shaft sleeve are sleeved with each other and rotate synchronously, and the second needle shaft and the second reel shaft sleeve are sleeved with each other and rotate synchronously;

the first needle winding shaft is connected with a first needle feeding mechanism to drive the first needle winding shaft to reciprocate along the axis of the first needle winding shaft sleeve; the second needle winding shaft is connected with a second needle feeding mechanism so as to drive the second needle winding shaft to reciprocate along the axis of the second winding shaft sleeve;

the needle winding device is characterized in that a first winding needle is fixedly arranged on the first winding needle shaft, a second winding needle is fixedly arranged on the second winding needle shaft, the needle points of the first winding needle and the second winding needle are oppositely arranged, and the rotating center lines of the first winding needle and the second winding needle are overlapped.

As an improvement of the above scheme, the driving module includes a first motor, a belt transmission mechanism and a transmission shaft, the belt transmission mechanism includes a first synchronous pulley, a second synchronous pulley, a third synchronous pulley, a fourth synchronous pulley, a fifth synchronous pulley and a sixth synchronous pulley, the first synchronous pulley is disposed at an output end of the first motor, the second synchronous pulley and the third synchronous pulley are disposed on the first reel shaft sleeve, the fourth synchronous pulley and the fifth synchronous pulley are disposed on the transmission shaft, the sixth synchronous pulley is disposed on the second reel shaft sleeve, the first synchronous pulley and the second synchronous pulley are connected by a first synchronous belt, the third synchronous pulley and the fourth synchronous pulley are connected by a second synchronous belt, the fifth synchronous pulley and the sixth synchronous pulley are connected by a third synchronous belt, the transmission ratio of the third synchronous belt wheel to the fourth synchronous belt wheel is 1:1, and the transmission ratio of the fifth synchronous belt wheel to the sixth synchronous belt wheel is 1: 1.

As an improvement of the above scheme, the first needle feeding mechanism and the second needle feeding mechanism are both screw modules, the screw modules are mounted on the frame, each screw module includes a second motor, a screw, a first bearing seat and a second bearing seat, an output end of the second motor is coaxially connected with the screw, an inner ring of the first bearing seat is sleeved on the screw, an inner ring of the second bearing seat is respectively fixedly sleeved on the first needle winding shaft and the second needle winding shaft, and an outer ring of the first bearing seat is connected with an outer ring of the second bearing seat through a first rigid block.

As the improvement of above-mentioned scheme, first book needle and second are rolled up the needle and are all included fixed part and winding part, winding part is stair structure and includes first stair structure and second stair structure by sharp portion to the root, first stair structure includes first stair surface, second stair structure includes second stair surface, two be parallel to each other and have the clearance between the first stair surface, be parallel to each other and can laminate between the first stair surface of needle and the second of first book needle, form the centre gripping chamber between two first stair surfaces after two sets of second stair surfaces and the first stair surface realization laminates.

As an improvement of the scheme, the first winding needle and the second winding needle are identical in structure, and the tail end of the first stepped structure forms a sharp-angled structure.

As an improvement of the above aspect, the diaphragm pull-down mechanism includes:

a jaw for gripping the diaphragm;

the clamping jaw is arranged on the first sliding block;

the propelling cylinder comprises a cylinder body and a propelling rod which can stretch relative to the cylinder body, the tail end of the propelling rod is connected with the first sliding block, and the propelling cylinder is connected with a proportional valve;

the cylinder body is fixedly arranged on the second sliding block;

and the driving mechanism is connected with the second sliding block and drives the second sliding block to reciprocate.

As an improvement of the above scheme, the clamping jaw comprises two clamping pieces, a supporting rod, a driving connecting rod, a transverse driving shaft and a driving cylinder, wherein the clamping pieces comprise a clamping end for clamping the diaphragm and a driving end opposite to the clamping end; one end of the support rod is rotatably connected with the middle part of one of the clamping pieces, and the other end of the support rod is rotatably connected with the middle part of the other clamping piece; the number of the driving connecting rods is two, the driving connecting rods respectively comprise first ends and second ends, the first ends of the two driving connecting rods are respectively and rotatably connected to the driving ends of the corresponding clamping pieces, the transverse driving shaft is perpendicular to the two driving connecting rods, and the second ends of the two driving connecting rods are jointly and rotatably arranged on the transverse driving shaft; the driving cylinder comprises a cylinder rod capable of reciprocating, and the tail end of the cylinder rod is connected with the transverse driving shaft; when the air cylinder rod drives the transverse driving shaft to move, the distance between the clamping ends of the two clamping pieces changes.

As an improvement of the above scheme, the thickness of the clamping piece is gradually reduced from the middle part to the clamping ends, the two clamping ends are protruded upwards on the opposite clamping surfaces to form pressing parts, one of the pressing parts and the clamping piece are manufactured into a whole, the other pressing part is soft glue embedded on the clamping surfaces, an opening is formed in the middle of each clamping end, and the pressing parts are located on two sides of the opening.

As an improvement of the scheme, the distance from the clamping end to the middle rotating point of the clamping piece is larger than the distance from the driving end to the middle rotating point of the clamping piece.

As an improvement of the above scheme, the pole piece cutter mechanism comprises a driving and reversing driving mechanism, a first cutter driving mechanism, a second cutter driving mechanism, a first cutter structure and a second cutter structure; the driving end of the driving and reversing driving mechanism is connected with a horizontal sliding block, the horizontal sliding block horizontally reciprocates under the driving of the driving and reversing driving mechanism, the first cutter driving mechanism and the second cutter driving mechanism are both arranged on the horizontal sliding block, the first cutter structure and the second cutter structure both comprise a first blade and a second blade, the first blade and the second blade are hinged at the root parts, the first blade is fixedly arranged on the horizontal sliding block, the root parts of the two second blades are respectively connected with the driving ends of the first cutter driving mechanism and the second cutter driving mechanism, and the first cutter driving mechanism and the second cutter driving mechanism respectively drive the second blade to rotate relative to the first blade.

As an improvement of the above scheme, the driving ends of the first cutter driving mechanism and the second cutter driving mechanism are connected with a pressing rod, a sliding groove is formed in the pressing rod, a driving bearing is arranged on the side surface of the second blade and embedded into the sliding groove, the pressing rod can drive the driving bearing to slide in the sliding groove when moving up and down, two guide groove blocks are arranged on the horizontal sliding block, the pressing rod is in an L shape, the vertical part of the pressing rod is inserted into the guide groove blocks, and the sliding groove is formed in the side surface of the horizontal part of the pressing rod.

As an improvement of the above scheme, an elastic connecting member is arranged between the first blade and the second blade, the elastic connecting member is located behind the hinged position, the elastic connecting member includes a fixed portion, a movable portion and an elastic unit, the fixed portion is arranged on the first blade, the top of the fixed portion is recessed to form an accommodating cavity, an opening of the accommodating cavity faces the second blade, the movable portion and the elastic unit are both located in the accommodating cavity, the movable portion partially protrudes out of the opening of the accommodating cavity under the elastic action of the elastic unit, and the movable portion abuts against the second blade.

As an improvement of the scheme, the movable part is a spherical steel ball, the diameter of the spherical steel ball is larger than the diameter of the opening of the containing cavity, and the elastic unit is a compression spring.

The invention has the beneficial effects that: the equipment integrates three modules of a pole piece conveying module, a diaphragm conveying module and a winding module, and a plurality of functional modules are integrated in the pole piece manufacturing and winding equipment so as to automatically complete the electric core winding preparation of needle type lithium batteries. The battery cell is prepared by the equipment, and the preparation efficiency of the battery cell can be greatly improved.

Drawings

The invention is further described with reference to the following figures and examples:

FIG. 1 is a schematic plan view of a needle-type lithium battery sheet-making and winding integrated device;

FIG. 2 is a schematic view of the overall structure of a pole piece deviation rectifying and feeding mechanism;

FIG. 3 is a schematic structural view of the first pinch roller and the second pinch roller clamping the pole pieces;

FIG. 4 is a schematic structural diagram of a deviation rectifying driving mechanism;

FIG. 5 is a schematic view of the overall structure of the winding head mechanism;

FIG. 6 is a schematic view of the engagement of the first winding pin and the second winding pin;

FIG. 7 is a schematic view of the overall structure of the diaphragm pull-down mechanism;

FIG. 8 is a schematic view of the overall structure of the pole piece cutter mechanism;

FIG. 9 is a schematic perspective view of the first or second cutter structure;

fig. 10 is a schematic structural view of the elastic connecting member.

Detailed Description

Referring to fig. 1 to 10, an embodiment of the present invention provides a needle-type lithium battery sheet-making and winding integrated apparatus, which mainly includes three modules, namely a sheet feeding module, a membrane feeding module and a winding module. The pole piece feeding module comprises a positive pole piece feeding module and a negative pole piece feeding module which are respectively used for completing the pole lug welding and pole piece conveying of a positive pole piece and the pole lug welding and pole piece conveying of a negative pole piece. The pole pieces conveyed by the pole piece conveying module are inserted into the winding module, and the diaphragm is conveyed to the winding module by the diaphragm conveying module, so that the three modules of the whole equipment can be automatically controlled, and the pole pieces and the diaphragm can automatically complete the manufacture of the battery cell under the winding action of the winding module.

Specifically, the positive plate feeding module and the negative plate feeding module each include a plate unwinding mechanism 10, a first plate tension mechanism 20, a tab welding mechanism 40, a protective tape pasting mechanism 50, a second plate tension mechanism 70, a plate length measuring mechanism 80, and a plate deviation rectifying and feeding mechanism 90. The positive pole piece roll and the negative pole piece roll are respectively hung on a hanging shaft of the pole piece unreeling mechanism 10, the first pole piece tension mechanism 20 is installed at the rear end of the pole piece unreeling mechanism 10, the pole pieces led out by the pole piece unreeling mechanism 10 pass through the first pole piece tension mechanism 20, and the first pole piece tension mechanism 20 provides unreeling power, so that the pole pieces can be continuously output by the pole piece unreeling mechanism 10. The pole piece passes through the first pole piece tension mechanism 20 and then is input into the pole lug welding mechanism 40, and the pole piece is welded on the pole piece through ultrasonic wave when the cut pole lug passes through the pole lug welding mechanism 40.

In order to ensure the cleanness and sanitation of the pole pieces, a pole piece dust removing mechanism 30 is also arranged between the first pole piece tension mechanism 20 and the pole lug welding mechanism 40.

After the pole piece is welded with the pole lug, the pole lug and the coating layer area can be glued by the protective tape gluing mechanism 50 to shield the raised edge in order to avoid the edge of the pole lug from piercing the diaphragm. The second pole piece tension mechanism 70 is installed at the rear end of the protective tape attaching mechanism 50, and the pole pieces are continuously conveyed forward under the power provided by the second pole piece tension mechanism 70.

Meanwhile, in order to determine the effect of the adhesive tape, a CCD pole piece detecting mechanism 60 is further installed between the protective tape attaching mechanism 50 and the second pole piece tensioning mechanism 70. Specifically, the CCD pole piece detecting mechanism 60 can detect the pole piece after the rubberizing, photograph and measure the front and back surfaces of the pole piece through the CCD, and reject the product that is unqualified in rubberizing through the measured data.

The pole piece output by the second pole piece tension mechanism 70 is driven to realize length measurement through the pole piece length measuring mechanism 80, meanwhile, the pole piece deviation rectifying and feeding mechanism 90 is installed at the rear end of the pole piece length measuring mechanism 80, and the pole piece deviation rectifying and feeding mechanism 90 realizes the rectification before the pole piece enters the winding module, so that the regularity of the wound pole piece is ensured.

The membrane feeding module comprises a membrane unreeling mechanism 100, a membrane tension mechanism 110 and a membrane pull-down mechanism 120. The membrane roll is placed on a hanging shaft of the membrane unreeling mechanism 100, the membrane tension mechanism 110 is installed at the rear end of the membrane unreeling mechanism 100, and the membrane passes through the membrane tension mechanism 110 and then points to the reeling module. And, the membrane pulling-down mechanism 120 can pull the membrane in the membrane winding process, provide tension to ensure that the membrane is wound in a tensioned state, and ensure the winding effect.

Meanwhile, the winding module includes a winding head mechanism 150, a pole piece cutter mechanism 160, a stop rubberizing mechanism and a blanking mechanism 130. The positive plate, the negative plate and the diaphragm are all inserted into the winding head mechanism 150 and realize winding, the pole piece cutter mechanism 160 is used for cutting the pole piece, the blanking mechanism 130 is used for transferring a finished product of a wound battery core, the diaphragm cutting and ending mechanism 170 comprises a diaphragm cutter and an ending pinch roller, the diaphragm cutter is used for cutting the diaphragm, and the ending pinch roller is used for preventing the diaphragm from loosening after the diaphragm is cut off.

In the device, the membrane unwinding mechanism 100 is located above the winding head mechanism 150, the membrane pulling-down mechanism 120 is located below the winding head mechanism 150, the positive plate feeding module is arranged on the right side of the winding head mechanism 150, and the negative plate feeding module is arranged on the left side of the winding head mechanism 150. The diaphragm pull-down mechanism 120 pulls the diaphragm down to pass through the winding head mechanism 150, the positive plate output by the pole piece deviation rectifying and feeding mechanism 90 of the positive plate feeding module is inserted into one side of the winding head mechanism 150, the negative plate output by the pole piece deviation rectifying and feeding mechanism 90 of the negative plate feeding module is inserted into the other side of the winding head mechanism 150, and the positive plate and the negative plate are respectively positioned on two sides of the diaphragm for winding.

The equipment integrates three modules of a pole piece conveying module, a diaphragm conveying module and a winding module, and a plurality of functional modules are integrated in the pole piece manufacturing and winding equipment so as to automatically complete the electric core winding preparation of needle type lithium batteries. The battery cell is prepared by the equipment, and the preparation efficiency of the battery cell can be greatly improved.

Preferably, the apparatus further includes a cell conveying mechanism 140, and the cell conveying mechanism 140 is installed below the blanking mechanism 130. After the cell that has completed winding is rubberized by the end rubberizing mechanism, the blanking mechanism 130 further transfers the cell to the cell conveying mechanism 140 to convey the cell to the next process.

In order to keep the interior of the whole equipment in a dust-free environment, an equipment sealing dust removal system is also arranged in the equipment. The sealed dust removal system of the equipment specifically comprises a sealed frame, a sealed door, a fan and a dust collecting device. Wherein sealing door builds on sealed frame, realizes the sealed at whole equipment to isolated external environment. The equipment top install the fan, and the fan is bloied from top to bottom, and dust collecting device is installed to the equipment bottom, and the dust in the sealing door is collected to dust collecting device in under the guide of fan.

Meanwhile, in order to conveniently control the whole machine, the equipment is also provided with a whole machine control system, the whole machine control system mainly comprises a control host, various buttons and a display screen are arranged on the control host, and the control host is connected with the equipment into a whole through a supporting rod. The control host computer sets up in the outside of the sealed dust pelletizing system of equipment, makes things convenient for operating personnel to control.

As one of the preferred embodiments of the present invention, the pole piece deviation rectifying and feeding mechanism 90 in the apparatus is mainly composed of a clamping mechanism 91, a deviation rectifying driving mechanism 92, a pole piece feeding driving mechanism 93 and a deviation rectifying detector. The pole pieces pass through the clip mechanism 91 and extend to the winding module.

The driving end of the deviation rectifying driving mechanism 92 is linked with the clamping piece mechanism 91, and the deviation rectifying driving mechanism 92 is started, so that the clamping piece mechanism 91 can be driven to reciprocate in the deviation rectifying direction; the driving end of the sheet feeding driving mechanism 93 is linked with the sheet clamping mechanism 91, and the sheet feeding driving mechanism 93 is started, so that the sheet clamping mechanism 91 can be driven to reciprocate in the pole piece conveying direction.

The linkage is a power connection, the deviation correcting driving mechanism 92 can provide a power source pointing to the deviation correcting direction, and the sheet feeding driving mechanism 93 can provide a power source pointing to the sheet feeding direction. The clamping mechanism 91 is used to clamp or unclamp pole pieces passing through its interior. The clamping piece mechanism 91 can realize the pole piece deviation rectifying function and the pole piece feeding function through the power of the deviation rectifying driving mechanism 92 and the pole piece feeding driving mechanism 93. The deviation rectifying detector is used for detecting the offset of the pole piece. The offset is equal to the displacement of the clip mechanism 91 driven by the deviation correcting driving mechanism 92 in the deviation correcting direction.

The pole piece deviation rectifying and feeding mechanism 90 realizes the combination of pole piece feeding and deviation rectifying functions, and the deviation rectifying of the pole piece can be realized by driving the clamping piece mechanism 91 to reciprocate in the deviation rectifying direction through the deviation rectifying driving mechanism 92; meanwhile, the sheet feeding driving mechanism 93 drives the clamping piece mechanism 91 to reciprocate in the conveying direction of the pole pieces, so that the pole pieces can be conveyed. The deviation-rectifying driving mechanism 92 moves forwards along with the pole piece, so that the deviation-rectifying position is close to the winding station to the maximum extent, and the deviation-rectifying effect is remarkable.

Specifically, the clamping mechanism 91 includes an upper clamping piece, a lower clamping piece, and a clamping piece driving mechanism, and the clamping piece driving mechanism can drive the upper clamping piece to move in the vertical direction of the upper and lower surfaces of the pole piece, so that the two clamping pieces move relatively or back to back. The clamping piece drive drives actuating cylinder in this embodiment, drives actuating cylinder's cylinder pole and clamping piece fixed mounting down, drives actuating cylinder's cylinder body and last clamping piece fixed mounting, through the flexible of cylinder pole, can realize going up clamping piece and keeping away from with being close to down between the clamping piece to accomplish the clamp of pole piece tightly and unclamp. Meanwhile, the mounting modes of the driving cylinder, the upper clamping piece and the lower clamping piece can be exchanged, and the principle is the same. The driving cylinder can also be arranged on the frame, the cylinder rod is fixedly connected with one clamping piece, and the driving cylinder drives the clamping piece to move up and down.

Preferably, a first pressing wheel 911 is rotatably arranged on the upper clamping piece, a second pressing wheel 912 is rotatably arranged on the lower clamping piece, and the first pressing wheel 911 and the second pressing wheel 912 are arranged in a vertically opposite manner. The first pressing wheel 911 and the second pressing wheel 912 move relatively to be respectively pressed on the upper surface and the lower surface of the pole piece, and the pole piece between the first pressing wheel 911 and the second pressing wheel 912 is clamped, so that the pole piece can be stably conveyed to a winding station.

Meanwhile, in order to avoid the pole piece from retracting in the pole piece conveying process, the second pressing wheel 912 is set to rotate in a single direction, and the rotating direction of the second pressing wheel 912 is consistent with the conveying direction of the pole piece. The pole piece is slightly deformed due to the fact that tension is applied to the pole piece to a certain degree in the winding process, and then the pole piece has the tendency of restoring deformation. After the pole piece is cut, the retraction of the pole piece may cause the first pressing wheel 911 and the second pressing wheel 912 to rotate reversely, so as to drive the pole piece reversely, so that the end of the pole piece is separated from the gap between the first pressing wheel 911 and the second pressing wheel 912, and the device cannot perform subsequent actions. Once the second pressing wheel 912 is set to rotate in one direction, the rotation can be avoided, and the stability of the whole device is ensured.

Preferably, the first and second pinch rollers 911 and 912 are disposed at front end portions of the upper and lower jaws, respectively. The detection position of the deviation-correcting detector is arranged close to the first pinch roller 911 and the second pinch roller 912 and behind the first pinch roller 911 and the second pinch roller 912. The deskew detector may be a deskew optical fiber mounted on a rack. And in the process of feeding the pole piece, the deviation of the pole piece is detected by the deviation-rectifying optical fiber. The offset can be fed back to the deviation-correcting driving mechanism 92, and the deviation-correcting driving mechanism 92 drives the clamping piece mechanism 91 to move in the deviation-correcting direction, so that the pole piece is ensured to be conveyed to the winding station along the correct direction under the clamping of the first pressing wheel 911 and the second pressing wheel 912.

Meanwhile, the front end of the upper clamping piece is provided with an upper pressing block pointing to the pole piece conveying direction, the front end of the lower clamping piece is provided with a lower pressing block pointing to the pole piece conveying direction, and a gap for the pole piece to pass through is formed in front of the upper pressing block and the lower pressing block. The pole piece passes through the gap between the first pressing wheel 911 and the second pressing wheel 912 and then penetrates out through the gap. The gap forms a rigid clamping piece channel, and compared with the situation that the pole piece directly penetrates out between the first pressing wheel 911 and the second pressing wheel 912, the clamping stability of the pole piece can be ensured by avoiding the pole piece from shaking to a larger extent at the clamping position of the first pressing wheel 911 and the second pressing wheel 912.

Specifically, the deviation rectifying driving mechanism 92 in the device is composed of a first motor, a belt transmission mechanism 921 and a first lead screw component 922. Wherein first lead screw subassembly 922 includes first lead screw and the first bearing frame of suit on first lead screw, and the first lead screw corotation of first motor drive and reversal, first bearing frame along the direction reciprocating motion of rectifying, clamping piece mechanism 91 is through first rigid connection spare and first bearing frame fixed connection in order to realize synchronous movement. Send piece actuating mechanism 93 to install in the frame, send piece actuating mechanism 93 to include second motor and second lead screw subassembly 931, second lead screw subassembly 931 includes second lead screw and the second bearing frame of suit on the second lead screw, and second motor drive second lead screw corotation and reversal, second bearing frame along pole piece direction of delivery reciprocating motion, drive mechanism 92 rectifies through second rigid connection spare and second bearing frame fixed connection in order to realize synchronous motion.

The second lead screw is synchronously and rotatably arranged on an output shaft driven by a second motor through a coupler, and is rotatably arranged on the rack through a bearing. The rack is provided with a pair of linear slide rails, the second rigid connecting piece is plate-shaped and can be a steel plate, the bottom surface of the steel plate is fixedly arranged with the second bearing seat, and the two side parts of the steel plate are connected with the linear slide rails in a sliding manner. The linear slide rail provides support and guidance, so that the second rigid connecting piece can smoothly reciprocate along with the second bearing seat.

The deviation-rectifying driving mechanism 92 is fixedly installed on the second rigid connecting piece, and the whole body can move back and forth along with the second rigid connecting piece. Specifically, a first motor is fixedly arranged on the second rigid connecting piece, and a first lead screw is rotatably arranged on the second rigid connecting piece through a bearing. When the first motor is started, the belt transmission mechanism 921 is used for driving the first lead screw to rotate, so as to drive the first bearing seat to reciprocate in the deviation rectifying direction. The first rigid connecting piece is plate-shaped or can be a steel plate, the bottom surface of the steel plate is fixedly installed with the first bearing seat, and the first rigid connecting piece moves back and forth along with the first bearing seat. Specifically, a guide shaft may be provided on the first rigid connecting member, the guide shaft penetrates through the lower clip of the clip mechanism 91, and the entire clip mechanism 91 may reciprocate along the guide shaft.

Preferably, the second rigid connecting piece is provided with a limit baffle plate which reciprocates along with the second rigid connecting piece in the pole piece conveying direction, the rack is provided with a group of limit switches in the pole piece conveying direction, and the two limit switches are respectively positioned in front of and behind the limit baffle plate so as to limit the moving stroke of the second rigid connecting piece. The limit switch can be a travel switch, and when the limit baffle abuts against the travel switch, the travel switch transmits the electric signal to the second motor, and the second motor stops rotating.

The following are the stages and the working principle of the pole piece deviation rectifying and feeding mechanism 90:

1. in the initial state, the upper clamping piece and the lower clamping piece are in a separated state, and the second rigid connecting piece is driven by the second bearing seat to be integrally located at the initial position.

2. And the upper clamping piece and the lower clamping piece relatively move to the clamping pole piece under the driving of the driving cylinder.

3. And the sheet feeding action is that under the drive of the second motor, the second bearing seat drives the second rigid connecting piece to move forwards, so that the sheet clamping mechanism 91 moves forwards, and the conveying of the pole pieces is realized.

4. And loosening the pole piece, driving the cylinder to reset, moving the upper clamping piece and the lower clamping piece back to be separated from each other, and loosening the pole piece.

5. And the clamping piece mechanism 91 and the deviation correcting mechanism move backwards until the clamping piece mechanism returns to the initial position.

In the sheet feeding action, the deviation rectifying mechanism is in a working state, the first motor executes corresponding deviation rectifying action according to the information fed back by the deviation rectifying detector, and the deviation rectifying action is synchronously carried out along with the sheet feeding action.

Meanwhile, the pole piece deviation rectifying and feeding mechanism 90 is designed to be integrally installed, so that the stability is high and the debugging is convenient.

As one of the preferred embodiments of the present invention, the winding head mechanism 150 of the apparatus is integrally mounted on the frame and located at the winding station for effecting winding of the separator. Specifically, the winding head mechanism 150 is mainly composed of a first reel bushing 1501, a second reel bushing 1503, a first reel shaft 1502, a second reel shaft 1504, a first reel needle 1505, a second reel needle 1506, a first needle feeding mechanism, a second needle feeding mechanism, a driving module, and the like. The working mode is a front-back needle drawing type.

Specifically, the first spool sleeve 1501 and the second spool sleeve 1503 are connected with a driving module, and the driving module can drive the first spool sleeve 1501 and the second spool sleeve 1503 to rotate. The first spool sleeve 1501 and the second spool sleeve 1503 rotate synchronously, that is, the rotation speed and the rotation direction of the two spool sleeves are consistent. The first winding needle shaft 1502 and the first winding shaft sleeve 1501 are sleeved with each other and rotate synchronously, and the second winding needle shaft 1504 and the second winding shaft sleeve 1503 are sleeved with each other and rotate synchronously. The mode of concrete accessible key-type connection realizes cup jointing of book needle axle and axle sleeve, and the epaxial bar key that sets up of book needle sets up the bar groove that supplies the bar key embedding in the axle sleeve, and bar key and bar groove cooperation joint satisfy the bar key simultaneously and can be at bar inslot reciprocating motion.

A first needle feeding mechanism is connected to the first needle winding shaft 1502 to drive the first needle winding shaft 1502 to reciprocate along the axis of the first needle winding shaft sleeve 1501; the second needle winding shaft 1504 is connected with a second needle feeding mechanism to drive the second needle winding shaft 1504 to reciprocate along the axis of the second reel sleeve 1503; the first winding needle shaft 1502 is fixedly provided with a first winding needle 1505, the second winding needle shaft 1504 is fixedly provided with a second winding needle 1506, needle points of the first winding needle 1505 and the second winding needle 1506 are arranged oppositely, and rotating center lines of the first winding needle 1505 and the second winding needle 1506 are overlapped. The first needle feeding mechanism and the second needle feeding mechanism provide power simultaneously to realize needle insertion and needle drawing.

The specific working steps are as follows:

1. the first needle feed mechanism drives the first spool 1502 to move axially forward along the first spool sleeve 1501 until the first spool needle 1505 reaches the winding station and is located on one side of the septum; the second needle feeding mechanism drives the second needle winding shaft 1504 to move axially forward along the second reel sleeve 1503 until the second needle winding 1506 reaches the winding station and is positioned at the other side of the diaphragm; the first winding needle 1505 and the second winding needle 1506 form a state of holding the septum.

2. The driving mechanism drives the first scroll sleeve 1501 and the second scroll sleeve 1503 to synchronously rotate, and at the same time, the first scroll needles 1505 and the second scroll needles 1503

The second winding needle 1506 follows the synchronous rotation, and the winding of the separator is realized.

3. After winding is completed, the first needle feeding mechanism drives the first winding needle shaft 1502 to move axially backwards along the first winding shaft sleeve 1501 until the first winding needle 1505 completely extracts the battery core; the second needle feeding mechanism drives the second needle winding shaft 1504 to move axially and backwards along the second reel sleeve 1503 until the second needle winding 1506 completely extracts the battery core.

In the winding head mechanism 150, the first winding needle 1505 and the second winding needle 1506 are arranged in a mode that the needle points are opposite, and after the cell is manufactured by using the winding head mechanism 150, the first winding needle 1505 and the second winding needle 1506 can be retreated in the opposite directions by driving the first needle feeding mechanism and the second needle feeding mechanism. The two sides of the inner-layer diaphragm positioned on the battery cell are respectively subjected to friction forces in opposite directions, the friction forces are mutually offset, the stress balance of the inner-layer diaphragm is ensured, the core-pulling phenomenon of the battery cell caused by uneven stress of the diaphragm is avoided, and the manufacturing quality of the battery cell is further ensured.

Preferably, the power source for driving the first spool sleeve 1501 and the second spool sleeve 1503 to synchronously rotate is the same driving module. Specifically, the driving module includes a first motor, a belt transmission mechanism 921, and a transmission shaft, and the belt transmission mechanism 921 includes a first synchronous pulley, a second synchronous pulley, a third synchronous pulley, a fourth synchronous pulley, a fifth synchronous pulley, and a sixth synchronous pulley. The first motor is fixedly arranged on the rack, and the first synchronous belt pulley is arranged at the output end of the first motor; the first spool shaft sleeve 1501 is installed on the rack through a bearing installation seat, the second synchronous pulley is installed at the end part of the first spool shaft sleeve 1501, and the first synchronous pulley and the second synchronous pulley are connected through a first synchronous belt. The third timing pulley is mounted on the other end of the first spool sleeve 1501. The transmission shaft rotates and sets up in the frame and is located first spool axle sleeve 1501 and second spool axle sleeve 1503 directly over, and fourth synchronous pulley and fifth hold-in range are installed respectively at the both ends of transmission shaft, connect through the second hold-in range between third synchronous pulley and the fourth synchronous pulley. The second reel shaft sleeve 1503 is mounted on the rack through a bearing mounting seat, the sixth synchronous pulley is fixedly mounted on the second reel shaft sleeve 1503, and the fifth synchronous pulley and the sixth synchronous pulley are connected through a third synchronous belt.

The transmission ratio of the third synchronous pulley and the fourth synchronous pulley is set to 1:1, and the transmission ratio of the fifth synchronous pulley and the sixth synchronous pulley is set to 1: 1. Thereby ensuring that the first winding needle 1505 and the second winding needle 1506 rotate synchronously to complete the winding of the membrane smoothly.

Preferably, a fixed shaft sleeve 1507 can be sleeved on the transmission shaft, the transmission shaft can freely rotate relative to the fixed shaft sleeve 1507, the rigidity of the transmission shaft can be increased by arranging the fixed shaft sleeve 1507, and the stability of power transmission is ensured. Meanwhile, a second rigid block is disposed between the fixed bushing 1507 and the second spool bushing 1503. By the definition of the second rigid block, the stability of the entire belt drive 921 is ensured.

Specifically, the first needle feeding mechanism and the second needle feeding mechanism are lead screw modules, the lead screw modules are installed on the rack and comprise second motors, lead screws, first bearing seats and second bearing seats, the output ends of the second motors are coaxially connected with the lead screws through couplers, the inner rings of the first bearing seats are sleeved on the lead screws, the inner rings of the second bearing seats are respectively fixedly sleeved on the first needle winding shafts 1502 and the second needle winding shafts 1504, and the outer rings of the first bearing seats are connected with the outer rings of the second bearing seats through first rigid blocks. The screw rod can rotate forwards and reversely under the driving of the second motor, so that the first bearing seat is driven to reciprocate. The first bearing seat, the second bearing seat and the first rigid block are connected into a whole, and the first bearing seat reciprocates and drives the second bearing seat to move along with the first bearing seat. Since the second bearing seat is respectively fixed and sleeved on the first needle winding shaft 1502 and the second needle winding shaft 1504, the second bearing seat can be specifically sleeved on the first needle winding shaft 1502 and the second needle winding shaft 1504 through ball bearings. The first needle winding shaft 1502 and the second needle winding shaft 1504 can rotate relative to the second bearing seat, and when the second bearing seat moves, the first needle winding shaft 1502 or the second needle winding shaft 1504 can be driven to reciprocate so as to realize the actions of needle inserting and needle withdrawing.

A linear slide rail is arranged on the rack, and the first rigid block is arranged on the linear slide rail. The first rigid block moves in a reciprocating manner under the guidance of the linear sliding rail, so that on one hand, the accuracy of linear movement is improved; on the other hand, the linear sliding rail also plays a role in supporting the first rigid block, so that the stability of the whole needle feeding mechanism is higher.

In order to realize the stroke control of needle insertion and needle withdrawal, an induction sheet structure is arranged on the outer ring of the first bearing seat, and a limit switch is arranged on the rack. The limit switch can be an infrared sensor or a laser sensor, and when the limit switch is triggered by the sensing piece structure, the second motor stops rotating immediately.

Meanwhile, the end of the first reel axle sleeve 1501 is provided with an optical code disc, and the optical code disc is provided with an electric eye for counting. The adjustment of the rotation angle can be realized through the optical code disc.

Preferably, each of the first winding needle 1505 and the second winding needle 1506 includes a fixing portion 16056 and a winding portion, the fixing portion 16056 is provided with a mounting hole, and the first winding needle 1505 and the second winding needle 1506 are fixedly mounted on the first winding needle shaft 1502 and the second winding needle shaft 1504 by screws, respectively. Simultaneously, the winding part is the stair structure, and this stair structure includes first stair structure and second stair structure by the sharp portion to the root of rolling up the needle, and first stair structure includes first stair face, and second stair structure includes the second stair face. After the first winding needle 1505 and the second winding needle 1506 are preliminarily adjusted in angle, two first step surfaces are parallel to each other and have a gap, the second step surface of the first winding needle 1505 and the first step surface of the second winding needle 1506 are parallel to each other, and the first step surface of the first winding needle 1505 and the second step surface of the second winding needle 1506 are parallel to each other. When the first winding needle 1505 and the second winding needle 1506 are relatively moved to be completely in the needle-out state, the two sets of second step surfaces and the first step surfaces are attached to each other. Thereby increasing the rigidity of the first winding needle 1505 and the second winding needle 1506 after being matched with each other, and ensuring the winding effect of the diaphragm. A clamping cavity is formed between the two first step surfaces, and the diaphragm is located in the clamping cavity to be wound.

For ease of manufacture, the first winding pin 1505 and the second winding pin 1506 are designed to be identical in construction. First stair structure and second stair structure are convex structure, and two book needles match the back each other, and first stair structure and second stair structure paste each other and form a complete circular structure.

To avoid the first needle 1505 and the second needle 1506 from interfering with each other during the docking process, the ends of the first stepped configuration form a pointed configuration.

As one of the preferred embodiments of the present invention, the membrane pulling-down mechanism 120 in the apparatus is mainly composed of a clamping jaw 1201, a first slider, a second slider, a propulsion cylinder 1202, a driving mechanism, and a frame.

Wherein the clamping jaw 1201 can be opened and clamped for clamping the diaphragm, and the clamping jaw 1201 is integrally mounted on the first sliding block and synchronously moves forwards and backwards with the first sliding block.

The propulsion cylinder 1202 is composed of a cylinder body and a propulsion rod that is extendable and retractable with respect to the cylinder body. Wherein, cylinder body fixed mounting realizes synchronous antedisplacement and retreats with the second slider on the second slider. A linear slide rail is arranged between the first slide block and the second slide block, so that the first slide block can move back and forth relative to the second slide block. The tail end of the push rod is fixedly connected with the first sliding block into a whole, and when the push rod moves in a reciprocating mode, the first sliding block moves in a reciprocating mode.

The driving mechanism is fixedly arranged on the rack, and meanwhile, the driving part of the driving mechanism is connected with the second sliding block into a whole, so that the second sliding block can realize reciprocating movement under the driving of the driving mechanism.

Meanwhile, the propulsion cylinder 1202 is connected with a proportional valve, and the proportional valve can remotely control the propulsion pressure of the propulsion cylinder 1202.

The driving mechanism drives the second sliding block to move forward, so that the pushing cylinder 1202 and the clamping jaw 1201 are integrally driven to move forward; simultaneously, the propulsion cylinder 1202 can also propel the first slide to move forward, and the clamping jaws 1201 are controlled to move forward independently. The clamping jaws 1201 jointly realize the forward conveying of the diaphragm under the driving superposition action of the driving mechanism and the propulsion cylinder 1202. The diaphragm is held in a tension state by the winding mechanism. Since the propulsion cylinder 1202 is connected to a proportional valve, which generally has pressure compensation capability, the output pressure can be free from load variations. The change compensation of the self tension of the diaphragm can be realized through the control of the proportional valve, so that the diaphragm can maintain stable tension to complete the whole winding process, the winding tightness of the diaphragm is basically consistent, and the quality of the battery cell is further ensured.

In this embodiment, the driving mechanism is specifically a screw mechanism 1203, a moving block sleeved on the screw is integrally installed with the second slider, and the servo motor drives the screw to rotate forward and backward, so as to drive the second slider to move forward and backward.

The clamping jaw 1201 mainly comprises clamping pieces, a supporting rod, a driving connecting rod, a transverse driving shaft, a driving cylinder and the like. The clamping pieces are arranged symmetrically up and down and comprise clamping ends used for clamping the diaphragm and driving ends opposite to the clamping ends. One end of the supporting rod is rotatably connected with the middle part of one of the clamping pieces, the other end of the supporting rod is rotatably connected with the middle part of the other clamping piece, and the two clamping pieces can rotate clockwise or anticlockwise around the end part of the supporting rod. The number of the support rods can be one or more, and when the number of the support rods is one, the support rods are respectively inserted into the middle parts of the two clamping pieces and hinged with the clamping pieces; when the number of the support rods is two, the support rods are respectively positioned at two sides of the clamping piece, and the end parts of the support rods are hinged with the clamping piece.

Meanwhile, the number of the driving links is two. The driving connecting rods comprise first ends and second ends, and the first ends of the two driving connecting rods are respectively and rotatably connected to the driving ends of the corresponding clamping pieces; the second ends of the two driving connecting rods are connected through a transverse driving shaft, the transverse driving shaft is perpendicular to the two driving connecting rods, and the second ends of the two driving connecting rods can rotate around the transverse driving shaft.

The driving cylinder is provided with a cylinder rod which can be driven by the driving cylinder to reciprocate, and the tail end of the cylinder rod is connected with the transverse driving shaft into a whole. Wherein a nesting hole may be formed at the end of the cylinder rod, and the transverse driving shaft is inserted into the nesting hole. The transverse driving shaft and the sleeving hole are preferably in clearance fit, so that the transverse driving shaft can rotate relative to the air cylinder rod, and the transverse driving shaft can be conveniently installed at the second end of the driving connecting rod and in the air cylinder rod.

When driving actuating cylinder start-up work, the cylinder pole antedisplacement, horizontal drive shaft is impeld by the level, and two drive connecting rods rotate around horizontal drive shaft antiport, keep away from gradually between the first end of two drive connecting rods, and the exposed core of two clamping pieces rotates around the vaulting pole relatively respectively, and until the exposed core butt, provide the clamp force. The cylinder rod is then advanced to the maximum stroke.

The cylinder rod moves backwards, and all parts move reversely until the clamping jaw 1201 is opened until the cylinder rod returns to the original position. The clamping jaw 1201 can drive the transverse driving shaft to move back and forth through the air cylinder rod, so that the distance between the clamping ends of the two clamping pieces is changed, and clamping and opening actions are completed. The clamping jaw 1201 with the structure has low requirements on the stroke of the driving cylinder, and the stroke is amplified by the connecting rod mechanism. Thus, the clamping action of the clamping jaw 1201 can be more rapid, less time consuming and more efficient.

Preferably, the thickness of the clip gradually decreases from the middle portion to the clamping end. On one hand, the weight of the clamping piece is reduced, and the load of the driving cylinder is reduced. On the other hand, when the clamping jaw 1201 is in an open state, the clamping surfaces of the two clamping ends which are opposite to each other are in a V shape, and the included angle of the V shape is equal to the included angle of rotation required by the clamping jaw 1201 to realize clamping. When the clamping pieces gradually rotate to the clamping jaw 1201 and are clamped, the two clamping surfaces are basically attached, and interference between the two clamping pieces in the clamping process is effectively avoided.

Furthermore, the two clamping ends are protruded upwards on the opposite clamping surfaces to form pressing parts, the diaphragm is clamped through the pressing parts, and the effect is better. One of the pressing parts and the clamping piece are manufactured into a whole, and the other pressing part is soft glue embedded on the clamping surface. The soft glue is formed by plastic through injection molding and has certain softness. The clamping force is applied to the membrane by a soft pressing part and a hard pressing part, so that the membrane is prevented from sliding in the winding process, and the stability of the clamping jaw 1201 is ensured.

Meanwhile, the middle part of the clamping end is provided with an opening, and the pressing part is positioned at the two sides of the opening. The opening separates the pressure portion, realizes that the diaphragm is pressed from both sides in many places interval, and its clamping effect is more excellent than monoblock centre gripping.

The driving cylinder is fixedly arranged on the first sliding block, the cylinder rod is provided with a guide block, and the guide block can be manufactured into a whole with the cylinder rod or fixedly arranged on the cylinder rod. The guide block is provided with a fixed limiting groove, the limiting groove is fixedly arranged on the first sliding block, the limiting groove limits the guide block to slide in one direction, and the sliding direction of the limiting groove limiting guide block is consistent with the moving direction of the air cylinder rod. Through setting up the spacing groove, realize the direction of cylinder rod on the one hand, on the other hand has strengthened whole drive arrangement's rigidity, ensures that the cylinder rod can realize accurate back-and-forth movement.

In this embodiment, the quantity of vaulting pole is two and sets up respectively in the both sides of clamping piece, and two clamping pieces are upper and lower symmetrical arrangement, and the central axis of cylinder pole is located the symmetry plane of two clamping pieces. The cylinder rod reciprocates, and the upper clamping piece and the lower clamping piece synchronously rotate in opposite directions to realize clamping and opening actions. The distance from the clamping end to the middle rotating point of the clamping piece is larger than the distance from the driving end to the middle rotating point of the clamping piece, and the clamping jaw 1201 can be opened and closed greatly by a small stroke.

When the clamping mechanism is in an initial state, the clamping jaw 1201 is in an open state, and the clamping jaw 1201 integrally moves backwards to an original point position. When the clamping mechanism is in a diaphragm clamping state, the clamping jaw 1201 moves forwards to a diaphragm clamping station under the driving action of the driving mechanism, and the driving cylinder drives the clamping jaw 1201 to clamp the diaphragm.

The clamping mechanism moves backwards to realize the membrane pull-down, the clamping jaw 1201 moves backwards under the driving action of the driving mechanism, and then the membrane pull-down is realized, and the forming size of the backward movement is determined by the length of the membrane required to be wound. The clamping mechanism moves forwards to achieve membrane winding, the winding needle continuously winds the membrane through rotation, and the clamping jaw 1201 moves forwards under the driving action of the driving mechanism to achieve membrane conveying in a matched mode; meanwhile, the propulsion cylinder 1202 also propels the first sliding block to move forwards, and the magnitude of the propulsion force of the propulsion cylinder 1202 is controlled by a proportional valve, so that the diaphragm is ensured to keep constant tension in the winding process, and the influence on the quality of the battery cell caused by large deformation of the diaphragm is avoided.

As one of the preferred embodiments of the invention, the pole piece cutter mechanism 160 of the device is applied to a pole piece cutting station of a cylindrical lithium ion battery production and winding all-in-one machine.

Specifically, the pole piece cutter mechanism 160 mainly comprises a forward and backward driving mechanism 1601, a first cutter driving mechanism 1603, a second cutter driving mechanism 1604, a first cutter structure 1605, a second cutter structure 1606, a horizontal sliding block 1602 and the like.

The forward and backward driving mechanism 1601, the first cutter driving mechanism 1603, and the second cutter driving mechanism 1604 may be driving cylinders, and cylinder rods of the driving cylinders may be driving ends of the driving cylinders. In this embodiment, the forward/backward driving mechanism 1601 employs a first driving cylinder, the first cutter driving mechanism 1603 employs a second driving cylinder, and the second cutter driving mechanism 1604 employs a third driving cylinder.

The cylinder rod of the first driving cylinder is connected with a horizontal sliding block 1602, and the cylinder rod can drive the horizontal sliding block 1602 to move along with the first driving cylinder when reciprocating in the first driving cylinder. The cylinder body of the first driving cylinder is provided with a guide rod, and the horizontal sliding block 1602 is connected with the guide rod in a sliding manner. The rigidity of the entire forward/backward driving mechanism 1601 is increased by the guide rod, and smooth and stable reciprocating movement of the horizontal slider 1602 is ensured.

The cylinder bodies of the second driving cylinder and the third driving cylinder are respectively installed on the left and right sides of the horizontal sliding block 1602 with the cylinder rod pointing downward. While the cylinder rod can be moved to and fro in a vertical plane.

All fixed mounting has a depression bar 1607 on the cylinder rod of second drive actuating cylinder and third drive actuating cylinder, and this depression bar 1607 is L shape, and the vertical portion and the cylinder rod fixed connection of depression bar 1607, the horizontal portion directional first cutter structure 1605 and second cutter structure 1606 respectively of depression bar 1607.

The first 1605 and second 1606 cutter structures each comprise first 16051 and second 16052 blades that are hinged to one another. The first blade 16051 and the second blade 16052 are hinged at the root; the first blade 16051 is fixedly mounted on the horizontal sliding block 1602, and the roots of the two second blades 16052 are connected to the lateral portions of the pressing rods 1607, respectively. Specifically, the transverse portion of the pressing rod 1607 is provided with a sliding groove, the sliding groove is located on the side face of the transverse portion, a driving bearing 16055 is installed on the side face of the second blade 16052, the driving bearing 16055 can be embedded into the sliding groove, and when the pressing rod 1607 is driven by the second driving cylinder and the third driving cylinder to reciprocate up and down, the driving bearing 16055 can be driven to slide in the sliding groove. When the pressing rod 1607 is pressed down, the surface of the driving bearing 16055 is stressed, and the second blade 16052 is driven to rotate. And a single blade rotates, so that the driving mechanism is simplified, and the stability of the pole piece cutting is improved.

In order to ensure that the pressing rod 1607 does not deviate from the track during the up-and-down movement, two guide groove blocks may be provided on the horizontal sliding block 1602, and the vertical portion of the pressing rod 1607 may be inserted into the guide groove blocks. In this way, the pressing rod 1607 can be stably reciprocated in the vertical direction at the limit of the guide groove block, ensuring the stability of cutting.

This pole piece cutter mechanism 160 is three-dimensional setting, conveniently realizes spatial structure's optimization. The cutter adopts the principle that the scissors were tailor, and two blades are articulated, only need to rotate relatively and can realize tailorring, should tailor the enlargeing of the usable arm of force of principle, reduce the required removal stroke of actuating mechanism, reduced promptly for guaranteeing that this mechanism can normally work required minimum space, and then make this mechanism can be in the operation in narrower space.

First cutter structure 1605 and second cutter structure 1606 are the same cutter structure, and this cutter structure is applicable to cutting of thin slice, when cutting the thin slice, can guarantee to hug closely each other between the blade, ensures to cut smoothly.

Specifically, the cutter structure is mainly composed of a first blade 16051, a second blade 16052, and an elastic connection member 16054. The front sections of the first blade 16051 and the second blade 16052 are provided with cutting edges which are arranged oppositely, so that the cutting of the pole pieces is realized. Meanwhile, the first blade 16051 and the second blade 16052 are hinged at the root, and when the first blade 16051 and the second blade 16052 rotate relatively, the blade edges are gradually meshed, so that the pole pieces can be cut.

The resilient connector 16054 is mounted rearward of the hinge. The rear is mainly relative to the blade, taking the hinge as the center, the blade is positioned in front of the hinge, and the elastic connector 16054 is positioned behind the hinge, so that the elastic force provided by the elastic connector 16054 can ensure that the blade is kept close.

Specifically, the elastic connection member 16054 includes a fixing portion 16056, a movable portion 16057, and an elastic unit, the fixing portion 16056 is mounted on the first blade 16051, a top portion of the fixing portion 16056 is recessed to form a receiving chamber, and an opening of the receiving chamber faces the second blade 16052. The movable part 16057 and the elastic unit are both located in the accommodating cavity, and after the movable part 16057 and the elastic unit are placed into the accommodating cavity, the opening of the accommodating cavity contracts, so that the movable part 16057 and the elastic unit are limited in the accommodating cavity. One end of the elastic unit is abutted against the bottom of the accommodating cavity, the other end of the elastic unit is abutted against the lower part of the movable part 16057, the movable part 16057 protrudes out of the opening of the accommodating cavity under the elastic force of the elastic unit, and the top of the movable part 16057 is abutted against the second blade 16052.

The bottom of the elastic unit applies an elastic force to the first blade 16051 through the fixing part 16056, and the top of the elastic unit applies an opposite elastic force to the second blade 16052 through the movable part 16057. Two reverse elastic forces act behind the hinge joint of the first blade 16051 and the second blade 16052, so that the cutting edges of the front sections of the first blade 16051 and the second blade 16052 are subjected to a pair of opposite thrust forces, and the front sections of the first blade 16051 and the second blade 16052 are kept close under the thrust forces, thereby effectively ensuring the slicing effect of the cutter structure. The elastic connection member 16054 can continuously provide elastic force, and the elastic force acts behind the hinge joint of the first blade 16051 and the second blade 16052, which is equivalent to applying a pair of forces in opposite directions behind the root parts of the first blade 16051 and the second blade 16052, so that the cutting edges of the front parts of the first blade 16051 and the second blade 16052 can be kept close.

Specifically, the first blade 16051 is provided with a screw hole, the fixing portion 16056 is cylindrical and has a screw thread on the outer circumference, and the fixing portion 16056 is mounted in the screw hole. The movable part 16057 is a spherical steel ball, and the diameter of the spherical steel ball is larger than the opening diameter of the containing cavity. The elastic unit is a compression spring. The bottom of the fixing part 16056 is recessed to form a regular hexagon.

The spherical steel balls are in point-surface contact with the second blade 16052, and friction force is greatly reduced. The fixing part 16056 is detachably mounted through threads, so that the elastic force between the first blade 16051 and the second blade 16052 can be adjusted conveniently, and the deeper the fixing part 16056 is screwed, the greater the deformation of the compression spring is, and the greater the elastic force is provided. The regular hexagon arranged at the bottom of the fixing part 16056 facilitates the installation and the disassembly of the fixing part 16056 through an inner hexagon tool.

Meanwhile, the first blade 16051 and the second blade 16052 are hinged by a dowel pin.

Although the pole piece unwinding mechanism 10, the first pole piece tension mechanism 20, the tab welding mechanism 40, the protective tape pasting mechanism 50, the second pole piece tension mechanism 70, the pole piece length measuring mechanism 80, the membrane unwinding mechanism 100, the membrane tension mechanism 110, the adhesive tape termination mechanism, the blanking mechanism 130, the pole piece dust removal mechanism 30, the CCD pole piece detection mechanism 60, the cell conveying mechanism 140, the membrane cutter, the ending pinch roller, and the like are not described in detail in the present application, this does not hinder those skilled in the art from understanding and implementing the technical solution of the present application. The above mechanisms are all existing mechanisms in the field, and are not described in detail here. Meanwhile, the fan and the dust collecting device are also of the conventional common type, the whole machine control system is also of the conventional control system, and the connection of the control circuit and the control principle are not required to be repeated.

While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. The utility model provides an integrative equipment of pin type lithium cell film-making coiling which characterized in that: the device comprises a pole piece feeding module, a diaphragm feeding module and a winding module;

2. The integrative device for sheet-making and winding of lithium needle batteries according to claim 1, wherein: and a pole piece dust removal mechanism is also arranged between the first pole piece tension mechanism and the pole lug welding mechanism.

3. The integrative device for sheet-making and winding of lithium needle batteries according to claim 2, wherein: and a CCD pole piece detection mechanism is also arranged between the protective tape pasting mechanism and the second pole piece tension mechanism.

4. The integrative device for sheet-making and winding of lithium needle batteries according to claim 3, wherein: the battery cell feeding mechanism is arranged below the blanking mechanism.

5. The integrative device for sheet-making and winding of lithium needle batteries according to claim 4, wherein: the device is characterized by further comprising a device sealing dust removal system, wherein the device sealing dust removal system is installed around the device in a sealing mode, and comprises a fan arranged at the top of the device and a dust collecting device arranged at the bottom of the device.

6. The integrative device for sheet-making and winding of lithium needle batteries according to claim 5, wherein: the whole machine control system comprises a control host which is arranged outside the equipment sealing dust removal system.

7. The lithium needle battery sheet-winding integrated apparatus according to any one of claims 1 to 6, wherein: the pole piece deviation rectifying and feeding mechanism comprises a clamping piece mechanism, a deviation rectifying driving mechanism, a pole piece feeding driving mechanism and a deviation rectifying detector, wherein the clamping piece mechanism is used for clamping or loosening a pole piece passing through the clamping piece mechanism, the driving end of the deviation rectifying driving mechanism is linked with the clamping piece mechanism, the deviation rectifying driving mechanism drives the clamping piece mechanism to reciprocate in the deviation rectifying direction, the driving end of the pole piece feeding driving mechanism is linked with the clamping piece mechanism, the pole piece feeding driving mechanism drives the clamping piece mechanism to reciprocate in the pole piece conveying direction, and the deviation rectifying detector is used for detecting the deviation of the pole piece.

8. The integrative device for sheet-making and winding of lithium needle batteries according to claim 7, wherein: the clamping piece mechanism comprises an upper clamping piece, a lower clamping piece and a clamping piece driving mechanism, wherein the clamping piece driving mechanism drives the upper clamping piece to move in the vertical direction of the upper surface and the lower surface of the pole piece, so that the two clamping pieces move oppositely or back to back; a first pressing wheel is rotatably arranged on the upper clamping piece, a second pressing wheel is rotatably arranged on the lower clamping piece, and the first pressing wheel and the second pressing wheel are arranged in a vertically opposite mode; the second pinch roller rotates in a single direction, and the rotating direction of the second pinch roller is consistent with the conveying direction of the pole piece.

9. The integrative device for sheet-making and winding of lithium needle batteries according to claim 8, wherein: the first pressing wheel and the second pressing wheel are respectively arranged at the front end parts of the upper clamping piece and the lower clamping piece; the detection position of the deviation rectifying detector is arranged close to the first pinch roller and the second pinch roller and behind the first pinch roller and the second pinch roller.

10. The integrative device for sheet-making and winding of lithium needle batteries according to claim 7, wherein: the deviation correcting driving mechanism comprises a first motor, a belt transmission mechanism and a first lead screw assembly, the first lead screw assembly comprises a first lead screw and a first bearing seat sleeved on the first lead screw, the first motor drives the first lead screw to rotate forwards and reversely, the first bearing seat reciprocates along the deviation correcting direction, and the clamping piece mechanism is fixedly connected with the first bearing seat through a first rigid connecting piece so as to realize synchronous movement; the sheet feeding driving mechanism is mounted on the rack and comprises a second motor and a second lead screw assembly, the second lead screw assembly comprises a second lead screw and a second bearing seat sleeved on the second lead screw, the second motor drives the second lead screw to rotate positively and negatively, the second bearing seat reciprocates along the pole piece conveying direction, and the deviation rectifying driving mechanism is fixedly connected with the second bearing seat through a second rigid connecting piece so as to realize synchronous movement.

11. The lithium needle battery sheet-winding integrated apparatus according to any one of claims 1 to 6, wherein: the winding head mechanism comprises a first reel shaft sleeve, a second reel shaft sleeve, a first reel needle shaft and a second reel needle shaft, wherein the first reel shaft sleeve and the second reel shaft sleeve are connected with a driving module, the first reel shaft sleeve and the second reel shaft sleeve synchronously rotate, the first reel needle shaft and the first reel shaft sleeve are mutually sleeved and synchronously rotate, and the second reel needle shaft and the second reel shaft sleeve are mutually sleeved and synchronously rotate;

12. The integrative device for sheet-making and winding of lithium needle batteries according to claim 11, wherein: the driving module comprises a first motor, a belt transmission mechanism and a transmission shaft, the belt transmission mechanism comprises a first synchronous belt wheel, a second synchronous belt wheel, a third synchronous belt wheel, a fourth synchronous belt wheel, a fifth synchronous belt wheel and a sixth synchronous belt wheel, the first synchronous belt wheel is arranged at the output end of the first motor, the second synchronous belt wheel and the third synchronous belt wheel are both arranged on a first reel shaft sleeve, the fourth synchronous belt wheel and the fifth synchronous belt wheel are both arranged on the transmission shaft, the sixth synchronous belt wheel is arranged on a second reel shaft sleeve, the first synchronous belt wheel and the second synchronous belt wheel are connected through a first synchronous belt, the third synchronous belt wheel and the fourth synchronous belt wheel are connected through a second synchronous belt, the fifth synchronous belt wheel and the sixth synchronous belt wheel are connected through a third synchronous belt, the transmission ratio of the third synchronous belt wheel to the fourth synchronous belt wheel is 1:1, the transmission ratio of the fifth synchronous belt wheel to the sixth synchronous belt wheel is 1: 1.

13. The integrative device for sheet-making and winding of lithium needle batteries according to claim 11, wherein: the first needle feeding mechanism and the second needle feeding mechanism are both lead screw modules, the lead screw modules are installed on the rack and comprise second motors, lead screws, first bearing seats and second bearing seats, the output ends of the second motors are coaxially connected with the lead screws, the inner rings of the first bearing seats are sleeved on the lead screws, the inner rings of the second bearing seats are respectively fixedly sleeved on the first needle winding shafts and the second needle winding shafts, and the outer rings of the first bearing seats and the outer rings of the second bearing seats are connected through first rigid blocks.

14. The integrative device for sheet-making and winding of lithium needle batteries according to claim 11, wherein: first roll up needle and second and roll up the needle and all include fixed part and winding part, winding part is stair structure and includes first stair structure and second stair structure by sharp portion to the root, first stair structure includes first stair face, second stair structure includes second stair face, two be parallel to each other and have the clearance between the first stair face, first second stair face of rolling up the needle and the second are parallel to each other and can laminate between the first stair face of rolling up the needle, first stair face of rolling up the needle and second are parallel to each other and can laminate between the second stair face of rolling up the needle, form the centre gripping chamber between two first stair faces after two sets of second stair faces and the first stair face realization laminating.

15. The lithium battery pellet winding integrated device according to claim 14, wherein: the first winding needle and the second winding needle are identical in structure, and a sharp-angled structure is formed at the tail end of the first stepped structure.

16. The lithium needle battery sheet-winding integrated apparatus according to any one of claims 1 to 6, wherein: the diaphragm pull-down mechanism includes:

a jaw for gripping the diaphragm;

the clamping jaw is arranged on the first sliding block;

the cylinder body is fixedly arranged on the second sliding block;

17. The lithium battery pellet winding integrated device according to claim 16, wherein: the clamping jaws comprise two clamping jaws, a supporting rod, a driving connecting rod, a transverse driving shaft and a driving cylinder, wherein the clamping jaws comprise a clamping end for clamping the diaphragm and a driving end opposite to the clamping end; one end of the support rod is rotatably connected with the middle part of one of the clamping pieces, and the other end of the support rod is rotatably connected with the middle part of the other clamping piece; the number of the driving connecting rods is two, the driving connecting rods respectively comprise first ends and second ends, the first ends of the two driving connecting rods are respectively and rotatably connected to the driving ends of the corresponding clamping pieces, the transverse driving shaft is perpendicular to the two driving connecting rods, and the second ends of the two driving connecting rods are jointly and rotatably arranged on the transverse driving shaft; the driving cylinder comprises a cylinder rod capable of reciprocating, and the tail end of the cylinder rod is connected with the transverse driving shaft; when the air cylinder rod drives the transverse driving shaft to move, the distance between the clamping ends of the two clamping pieces changes.

18. The integrative device for sheet-making and winding of lithium needle batteries according to claim 17, wherein: the thickness of the clamping piece is gradually reduced from the middle part to the clamping ends, the two clamping ends are upwards protruded on the opposite clamping surfaces to form pressing parts, one of the pressing parts and the clamping piece are manufactured into a whole, the other pressing part is soft rubber embedded on the clamping surfaces, an opening is formed in the middle of each clamping end, and the pressing parts are located on two sides of the opening.

19. The integrative device for sheet-making and winding of lithium needle batteries according to claim 17, wherein: the distance from the clamping end to the middle rotation point of the clamping piece is greater than the distance from the driving end to the middle rotation point of the clamping piece.

20. The lithium needle battery sheet-winding integrated apparatus according to any one of claims 1 to 6, wherein: the pole piece cutter mechanism comprises a driving and reversing driving mechanism, a first cutter driving mechanism, a second cutter driving mechanism, a first cutter structure and a second cutter structure; the driving end of the driving and reversing driving mechanism is connected with a horizontal sliding block, the horizontal sliding block horizontally reciprocates under the driving of the driving and reversing driving mechanism, the first cutter driving mechanism and the second cutter driving mechanism are both arranged on the horizontal sliding block, the first cutter structure and the second cutter structure both comprise a first blade and a second blade, the first blade and the second blade are hinged at the root parts, the first blade is fixedly arranged on the horizontal sliding block, the root parts of the two second blades are respectively connected with the driving ends of the first cutter driving mechanism and the second cutter driving mechanism, and the first cutter driving mechanism and the second cutter driving mechanism respectively drive the second blade to rotate relative to the first blade.

21. The lithium needle battery sheet-making and winding integrated device according to claim 20, wherein: first cutter actuating mechanism with second cutter actuating mechanism's drive end all is connected with the depression bar, set up the spout on the depression bar, the side of second blade is provided with drive bearing, drive bearing imbeds to the spout in, the depression bar can drive when reciprocating drive bearing slides in the spout, be provided with two guide way pieces on the horizontal sliding block, the depression bar is L shape, the vertical part of depression bar inserts in the guide way piece, the spout sets up the side at the depression bar horizontal part.

22. The lithium needle battery sheet-making and winding integrated device according to claim 20, wherein: the elastic connecting piece is arranged between the first blade and the second blade and located behind the hinged position, the elastic connecting piece comprises a fixing portion, a moving portion and an elastic unit, the fixing portion is arranged on the first blade, the top of the fixing portion is recessed to form an accommodating cavity, an opening of the accommodating cavity faces the second blade, the moving portion and the elastic unit are both located in the accommodating cavity, the moving portion protrudes out of the opening of the accommodating cavity under the elastic action of the elastic unit, and the moving portion is abutted to the second blade.

23. The lithium needle battery sheet-winding integrated apparatus according to claim 22, wherein: the movable part is a spherical steel ball, the diameter of the spherical steel ball is larger than the diameter of the opening of the containing cavity, and the elastic unit is a compression spring.